Answer:
x = 6
Step-by-step explanation:
The median is half the sum of the parallel bases , then
= 13 ( multiply both sides by 2 to clear the fraction )
12x - 46 = 26 ( add 46 to both sides )
12x = 72 ( divide both sides by 12 )
x = 6
Answer:
1 3/10 (SORRY IF ThIS IS WRONG)
Step-by-step explanation:
3/4 mile x 6 = 4 1/2
(we multiply by 6 because to get 60 minutes/1 hour you need to multiply 10 minutes by 6)
60/15=4
(we will multiply by 4 because we need that to get 1 hour)
4/5 x 4 = 3 1/5
4 1/2 - 3 1/5 = 4 5/10 - 3 2/10 (we do that so we can subtract easier)
4 5/10 - 3 2/10 = 1 3/10
Answer:
Step-by-step explanation:
Given
Required
Determine the distance covered in 
The distance is calculated using:
This gives:
Convert to improper fraction
Answer:
Step-by-step explanation:
Given that X and Y are independent random variables with the following distributions:
x -1 10 1 2 Total
p 0.3 0.1 0.5 0.1 1
xp -0.3 1 0.5 0.2 1.4
x^2p 0.3 10 0.5 0.4 11.2
Mean of X = 1.4
Var(x) = 11.2-1.4^2 = 9.24
y 2 3 5
p 0.6 0.3 0.1 1
yp 1.2 0.9 0.5 0 2.6
y^2p 2.4 2.7 2.5 0 7.6
Mean of Y = 2.6
Var(Y) = 11.2-1.4^2 = 0.84
3) W=3+2x
Mean of w =3+2*Mean of x = 7.2
Var (w) = 0+2^2 Var(x)= 36.96
Ok so 14 fewer dimes than nickels. That means 14 dimes LESS than nickels.
He has 21 dimes.
to find the nickels i believe you would add 14 and 21 so 14+21.
14+21=35
He has 35 nickels
